Fan Data Sheets_Kings Cross T1 Building

S U M M A R Y F A N D A T A S H E E T

Nuaire Limited, Western Industrial Estate, Caerphilly, CF83 1NA, United Kingdom. email:[email protected] Commercial Enquiries T:029 2085 8200 UK Residential Enquiries T:029 2085 8500 International Enquiries T:+44.29 2085 8497

Whilst the information given on this data sheet is fan specific, it is in summary and reference to the product selection catalogue and installation & maintenance documents is recommended.This data sheet produced on 01 May 2014 16:16 using software version 3.0.33 - 23-April-2014

0 20 40 60 80 100

600

500

400

300

200

100

0

Volume Flow Rate (l/s)

Stat

ic Pr

essu

re (P

a)

Technical DataMRXBOX95B-WM2H - Wall Mounted Multi Room Xboxwith Summer Bypass and Integral HumidistatWall Mounted Multi-Room Heat Recovery Unit with Summer Bypass

Fan Code: MRXBOX95B-WM2HInstallation Manual Links: 671600Required Duty: 45 l/s @ 170 PaActual Duty: 56 l/s @ 265 PaActual at Required Flow: 45 l/s @ 356 PaMotor Input Power: 0.144 kWSpecific Fan Power: 2.6 W/(l/s)Electrical Supply: 1 PhaseMotor Current: flc: 0.13 AMotor Current: sc: 0.15 AMax. Operating Temp.: 40CWeight: 20 kg

Sound DataAcoustic perfomance to BS848 Part 2.2 and AMCA 300.Breakout Noise (dBA): 37 dBA @ 3mInlet Noise (dBA): 40 dBA @ 3mOutlet Noise (dBA): 52 dBA @ 3mBreakout level is hemi-spherical. For spherical deduct 3 dBA.Sound Power Levels re 1 pWatts (Hz):Hz 63 125 250 500 1k 2k 4k 8kOpen Inlet 57 57 61 56 50 47 36 34Open Outlet 55 65 71 67 64 60 51 43Breakout 61 61 56 53 47 44 35 33

Project DetailsLocation: MVHR01 -

Fan Dimensions

The drawing is for dimensional purposes only. Dimensions in mm.

Performance Curve




Technical DataMRXBOX95B-WM2H - Wall Mounted Multi Room Xboxwith Summer Bypass and Integral HumidistatWall Mounted Multi-Room Heat Recovery Unit with Summer Bypass

Fan Code: MRXBOX95B-WM2HMeets Building RegulationsSAP Appendix Q recognised. Part F&L - England & Wales. Scottishtechnical handbook (BRE398 referenced). Technical booklet K1998.Optimum PerformanceLow Specific Fan power and high efficiency results in SAP Q.Suitable for medium sized applicationsDesigned to meet the duty for average, medium size properties.CompactThe unit fits easily into cupboards not taking up valuable storagespace.Extremely low noise levelsQuiet running unit ensuring occupant acceptability.Added securityWindows may be kept closed.Improves indoor air qualityHigh efficiency filters helps to create a healthy living environment.Low & easy maintenanceEasy accessible filters from front cover no tools required. Filterreplacement typically every 12 - 18 months.Discreet run monitorRecords units operational time.Integral frost protectionProtects the unit during extreme cold spells.Pre-commissioning filter protectionFilters are covered in a removable protective film to prevent cloggedup filters prior to occupant handover.Simple fan controlsIndependent controls for supply & extract for quick and easycommissioning.No requirements for trickle ventsReduces noise from outside - overcome draught issues.5 year warranty5 year parts and 1 year labour warranty guarantee reduced life costsand peace of mind.Summer boost facilityTo boost the fan speed to 100% (overrides commissioned boostspeed)Optional integral humidistatTo automatically boost the fan when humidity levels exceed theadjustable set point

OperationThe supply and extract ventilation unit shall be positioned as indicatedon the drawings and shall be in accordance with the particular fanschedule in the specification.The combined supply and extract with heat recovery unit, shall supplyfiltered fresh air to each of the habitable rooms and vitiated air shall beextracted from the wet areas e.g. bathroom, en-suite, w.c, kitchen,utility rooms, etc. The supply air shall be pre-heated by the warmextract air via the integrated counter-flow heat exchanger element.The extracted air shall also be filtered before it reaches the heatexchanger block.The bypass opens automatically when outside temperatureexceeds20C. This opens the damper via an actuator. Outside airsupplied through the bypass is still filtered, so the air quality is optimal,irrespective of the bypass setting (open or closed).The ventilation unit shall vary its speed and therefore the ventilationrate as it receives signals from the switched live signal from light/remote switches. When signals are received the fan shall alter itsspeed to adjustable, normal and boost rates.The unit shall have an integral humidity sensor incorporated within theextract fan chamber that will automatically boost both the extract andsupply fan to the commissioned boost speed, when the humidity levelsexceed that set, by the front panel mounted adjustment potentiometer.The unit shall have the facility to commission the supply and extractfans independently on minimum speed (continuous backgroundventilation), and boost speed, via inbuilt minimum and maximumspeed adjustment. The fans shall have infinitely variable speedcontrol.

SpecificationThe unit shall be fully insulated providing excellent thermal andacoustic characteristics and shall be complete with a multi platecounter flow high efficiency heat exchanger block, with a thermalefficiency of up to 90%. The heat exchanger shall be protected by G3grade filters on fresh air inlet and system extract. The heat exchangerand filters shall be accessible via the front access panel, enablingquick and easy maintenance.The unit shall have low energy, high efficiency EC fan/motorassemblies with sealed for life bearings, the impellers shall bebackward curved centrifugal type. The motors shall be suitable of anambient temperature of 40C.The unit shall be supplied complete with a condensate drip tray and21.5mm drain connection.The unit shall be suitable for 125mm diameter circular ducting.The breakout noise level and power requirements shall be as detailedby the unit manufacturer and in accordance with the ventilationequipment schedule.

Control OptionsAll versions shall have the following functions integrally mountedwithin the fan unit on a purpose made PCB, all such componentsprewired and factory fitted by the manufacturer: Independent control of background supply and extract flow rates. Independent control of boost speed supply and extract flow rates. Integral fan failure indication. Integral S/L terminal for 100% boost speed, from remote switch e.g.plate switch Integral S/L terminal for boost to commission level, from remoteswitch, e.g. light switch Integral humidity sensor Integral automatic summer bypass Integral heat exchanger frost protection. Discreet daily run monitor.

Optional ControlsMRXBOX95LH-RFI - Remote fail indicator.




0 50 100 150

600

500

400

300

200

100

0

Volume Flow Rate (l/s)

Stat

ic Pr

essu

re (P

a)

Technical DataMRXBOX95B-WH1H - Wall Mounted Multi Room Xboxwith Summer Bypass and Integral HumidistatWall Mounted Multi-Room Heat Recovery Unit with Summer Bypass

Fan Code: MRXBOX95B-WH1HInstallation Manual Links: 671599Required Duty: 65 l/s @ 170 PaActual Duty: 72 l/s @ 206 PaActual at Required Flow: 65 l/s @ 244 PaMotor Input Power: 0.15 kWSpecific Fan Power: 2.1 W/(l/s)Electrical Supply: 1 PhaseMotor Current: flc: 0.13 AMotor Current: sc: 0.15 AMax. Operating Temp.: 40CWeight: 24 kg

Sound DataAcoustic perfomance to BS848 Part 2.2 and AMCA 300.Breakout Noise (dBA): 36 dBA @ 3mInlet Noise (dBA): 34 dBA @ 3mOutlet Noise (dBA): 51 dBA @ 3mBreakout level is hemi-spherical. For spherical deduct 3 dBA.Sound Power Levels re 1 pWatts (Hz):Hz 63 125 250 500 1k 2k 4k 8kOpen Inlet 48 51 58 49 47 39 25




Technical DataMRXBOX95B-WH1H - Wall Mounted Multi Room Xboxwith Summer Bypass and Integral HumidistatWall Mounted Multi-Room Heat Recovery Unit with Summer Bypass

Fan Code: MRXBOX95B-WH1HLow maintenanceHigh quality components such as filters and EC motors ensure lowestpossible maintenance and long life motors.Meets RegulationsPart F building regulations compliantPart L building regulation compliantLow power consumptionReducing operating and the life cycle costs.CompactDedicated design ensured the most compact size for duty on themarket.Constant quiet running fansQuiet running unit, ensuring occupant acceptability.Creates a healthier environmentHigh efficiency filters removes up to 95% of dust particles.Easy to useWell located controls for simple installation, commissioning and use.WarrantyMRXBOX95B-WH1 has a 5 year warranty for peace of mind.Optional RemoteFail indicator MRXBOX95LH-RFI is connected to the fan unit via lowvoltage wiring.Summer boost facilityTo boost the fan speed to 100% (overrides commissioned boostspeed)Optional integral humidistatTo automatically boost the fan when humidity levels exceed theadjustable set point

OperationThe supply and extract ventilation unit shall be positioned as indicatedon the drawings and shall be in accordance with the particular fanschedule in the specification.The combined supply and extract with heat recovery unit, shall supplyfiltered fresh air to each of the habitable rooms and vitiated air shall beextracted from the wet areas e.g. bathroom, en-suite, w.c, kitchen,utility rooms, etc. The supply air shall be pre-heated by the warmextract air via the integrated counter-flow heat exchanger element.The extracted air shall also be filtered before it reaches the heatexchanger block.The bypass opens automatically when outside temperatureexceeds20C. This opens the damper via an actuator. Outside airsupplied through the bypass is still filtered, so the air quality is optimal,irrespective of the bypass setting (open or closed).The ventilation unit shall vary its speed and therefore the ventilationrate as it receives signals from the switched live signal from light/remote switches. When signals are received the fan shall alter itsspeed to adjustable, normal and boost rates.The unit shall have an integral humidity sensor incorporated within theextract fan chamber that will automatically boost both the extract andsupply fan to the commissioned boost speed, when the humidity levelsexceed that set, by the front panel mounted adjustment potentiometer.The unit shall have the facility to commission the supply and extractfans independently on minimum speed (continuous backgroundventilation), and boost speed, via inbuilt minimum and maximumspeed adjustment. The fans shall have infinitely variable speedcontrol.

SpecificationThe unit shall be fully insulated providing excellent thermal andacoustic characteristics and shall be complete with a multi platecounter flow high efficiency heat exchanger block, with a thermalefficiency of up to 95%. The heat exchanger shall be protected by G3grade filters on fresh air inlet and system extract. The heat exchangerand filters shall be accessible via the front access panel, enablingquick and easy maintenance.The bypass opens automatically when outside temperature exceeds20C. This opens the damper via an actuator. Outside air suppliedthroughy the bypass is still filtered, so the air quality is optimal,irrespective of the bypass setting (open or closed).The unit shall have low energy, high efficiency EC fan/motorassemblies with sealed for life bearings, the impellers shall bebackward curved centrifugal type. The motors shall be suitable of anambient temperature of 40C.The unit shall be supplied complete with a condensate drip tray and21.5mm drain connection.The unit shall be suitable for 150mm diameter circular ducting.The breakout noise level and power requirements shall be as detailedby the unit manufacturer and in accordance with the ventilationequipment schedule.

Control OptionsAll versions shall have the following functions integrally mountedwithin the fan unit on a purpose made PCB, all such componentsprewired and factory fitted by the manufacturer: Independent control of background supply and extract flow rates. Independent control of boost speed supply and extract flow rates. Integral fan failure indication. Integral S/L terminal for 100% boost speed, from remote switch e.g.plate switch Integral S/L terminal for boost to commission level, from remoteswitch, e.g. light switch Integral humidity sensor Integral automatic summer bypass Integral heat exchanger frost protection. Discreet daily run monitor.

Optional ControlsMRXBOX95LH-RFI - Remote fail indicator.

Additional Supporting Documentation

The following pages contain these additional supporting documents:

21. 06. 13. Leaflet Number 671599MRXBOX95B-WH1H Mechanical Ventilation Unit with Heat Recovery, Summer Bypass and Integral Humidistat Installation andMaintenance

21. 06. 13 Leaflet Number 671600MRXBOX95B-WM2H Mechanical Ventilation Unit with Heat Recovery, Summer Bypass and Integral Humidistat Installation andMaintenance

EMS 517710Telephone calls are recorded for quality & training purposes

The unit must remain switched on at all times to maintainventilation within the dwelling. Turning the unit off willcause long term damage to the unit and building fabric.

This appliance is not intended for use by persons (including children) with reduced physical, sensory ormental capabilities, or lack of experience and knowledge,unless they have been given supervision or instructionconcerning the use of the appliance by a person for theirsafety. Children should be supervised so that they do notplay with the appliance.

MRXBOX95B-WH1HMechanical Ventilation Unit with Heat Recovery, Summer Bypass and Integral Humidistat

Installation and Maintenance

1.0 Introduction

MRXBOX95B-WH1H wall mounted unit is designed to providemechanical supply and extract ventilation with heat recovery,summer bypass and integral humidistat.The unit is fitted with two independent fans. Each fan has fullspeed control for background and boost ventilation rates. To recover heat from the extract air the heat exchanger block is utilised. The heat exchanger can recover up to 95% of the normally wasted heat.

The bypass damper opens automatically via a wax actuator whenthe outside air reaches 20C, when the outer air temperaturereturns below this level the unit returns to its original state.Outside air supplied through the bypass is still being filtered, so the air quality is optimal, irrespective of the bypass setting(open or closed)

2.0 InstallationInstallation must be carried out by competent personnel inaccordance with the appropriate authority and conforming to all statutory governing regulations. All mains wiring must be in accordance with the current I.E.E. Regulations, or theappropriate standards. Ensure that the mains supply (Voltage, Frequency and Phase) complies with the rating label.

Please note a clear working space is required around theinstalled unit to allow the cover to be removed and provide sufficient access for maintenance such as filter change.Please allow a minimum of 250mm in front of the unit.

The fan must be installed indoors, on a suitable wall awayfrom direct sources of frost, heat, water spray or moisturegeneration. For a vibration-free result the unit must be mounted to a solid wall.

The unit is designed for wall mounting only via a patress.1. One part of the mounting bracket should be offered up to

the wall, ensuring its located horizontally. Mark the fixing points through the pre drilled holes in the bracket and install with screws (by others), ensuring the interlock side is at the top, fig. 2.

2. Fix the remaining part of the bracket to the unit using the M5 screws ensuring the interlock side is at the bottom, fig.3a.

3. Install the unit on the wall by ensuring the bracket on the unit interlocks over the wall mounted bracket (fig. 3b).

Note: Care must be taken to ensure the unit is installed truein all 3 dimensions. Failure to do so may result in overflowfrom the internal condensation drip tray.

Nuaire Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA T: 029 2085 8400 F: 029 2085 8444 E: [email protected] W: www.nuaire.co.uk

1 21. 06. 13. Leaflet Number 671599

Extract air from house

Intake air from outside

Exhaust air from houseto outside

Supply air to house

Figure 1. Airflow through unit.

The EMC Directive 2004/108/EC The Low Voltage Directive 2006/95/EC

Figure 3a. Fixing the mountingbracket to the rear of unit.

Pre-fittedsupport feet

Bracket

Figure 3b. Mounting the uniton the wall mounted bracket.

Figure 2. Fixing the mounting bracket to the wall via a patress.

150mm dia. ducting in ceiling void.

First floor ceiling.

Side view of unit mounted on thewall in a cupboard.(Note: The unit must be fixed to a suitable patress).

MVHR-DRAINCondensate drain,uninsulated drain pipe with 10 fall running to SVP.

o

Supply air valve in ceiling.

Figure 4. Typical example of a cupboard mounted unit on a patressusing the bracket.

2 21. 06. 13. Leaflet Number 671599

Installation and Maintenance MRXBOX95B-WH1H Mechanical Ventilation with Heat Recovery & Summer Bypass

Any air intake terminal MUST be installed in accordance with theappropriate regulation. As a guide, the BS5440 series of British Standards deals withthis issue and currently states that an air intake must be at aminimum distance of 300mm from a gas boiler balanced flue.

Installers are advised to be aware of the requirements of thisstandard when installing through the wall supply air ducting.

Similarly, supply and extract air grilles should be at least300mm apart.

Figure 5a. Wet option.Condensate pipe connection to unit and a typical example of a U trap drainpipe.

Figure 5b. MVHR-DRAIN option. Condensate drain, uninsulated drain pipe with 10o fall running to SVP.

5o Drop

Collar

2.1 Condensate Drain1. Remove the front cover from the unit.

2. Insert the drain connector through the base of the unit from outside. The condensate must be discharged under a water level in a U-trap drainpipe or an alternative drain method which acts as an airlock.

3. Ensure the drain connector forms a seal with the drain tray applying sealant if necessary. This condensate discharge connection is suitable for 21.5mm dia. overflow pipe. Solvent cement should be used to make the joint.

4. If using a U-trap please ensure the U-trap has been filled to a suitable level of water to avoid any air locks.

5. If the condensation pipe is fitted in an unheated space the pipe should be in insulated to prevent freezing.

Nuaire recommend MVHR-DRAIN be used as the primarycondensate take-off. (see figure 5b/7a/7b).

2.2 Extract/input areasThe unit is designed to extract air from all wet rooms e.g. bathroom, kitchen, en-suite, utility room (with sink). WCs do not need to be ventilated if openable windows are fitted.

Supply air should be to all habitable rooms e.g. bedrooms andlounge. Extract / input grilles should be adjustable valve types(not supplied).External grilles to have a minimum free area of 12,250 sq mm.

2.3 DuctingBefore commencing ducting installation reference should bemade to building regulations document Domestic ventilationcompliance guide. This document supports ADF2010 anddetails installation, testing and commissioning of all ventilationsystems.

It is recommended that rigid ducting be used it all times. Flexible ducting has a very high resistance and it is impossibleto calculate how much resistance will be on a system if used.

If used the flexible ducting must be kept to a minimum andshould always be pulled taut. A maximum of 500mm should be used on each leg.

To prevent condensation on the outside of the outside air inletduct and the air outlet duct from the MRXBOX95B-WH1H,these ducts should be insulated.

Ducting must be installed in such a way that resistance to airflow is minimised. Bends should be kept to a minimum.

A minimum distance of 200mm between the appliance and any bends in ductwork is recommended.

Ideally 125mm diameter or 204 x 60mm rectangular ductingshould be used. (Refer to dwelling design drawing, figure 7aand 7b on page 4 for further information).

Ducting joints must be sealed with silicone type sealant andshall be adequately and reliably fixed to the appliance.

2.4 Ventilation flow ratesTable 1.

ADF2006 / 2010 Extract ventilation rates

Room Min high rate Min low rate

Kitchen 13 l/s

Utility room 8 l/s

Bathroom 8 l/s

Sanitary accommodation 6 l/s

Table 2.

Whole dwelling ventilation rates

Number of bedrooms in dwelling

1 2 3 4 5

Whole 13 17 21 25 29dwelling ventilation rate l/s1, 2

Notes:1, In addition, the minimum ventilation rate be should be notless than 0.3 l/s per m2 of internal floor area. (This includes all floors, e.g. for a two-story building add theground and first floor areas).

2, This is based on two occupants in the main bedroom anda single occupant in all other bedrooms. This should be usedas the default value. If a greater level of occupancy isexpected add 4 l/s per occupant.

Total extract rate shouldbe at least the wholedwelling ventilation rategiven in table 2.

3 21. 06. 13. Leaflet Number 671599


654

619

Mounting bracket

431

Side viewView from front with cover removed

View from top

Spigots

4 x 150mm dia.

45816

120

22

6

22

6

3.0 Dimensions Figure 6.

2.5 Air permeability and infiltrationIs the uncontrolled exchange of air between inside and outsidethrough cracks, porosity and other unintentional openings inthe building. ADF2006 gives an allowance for this in both multiand single storey buildings, however ADF2010 has anallowance for multi storey only. Additionally ADF2010 onlyapplies this allowance for dwellings leaker than 5 m3/(h.m2) at50Pa. (See below).

2.6 ADF 2006 Ventilation calculationsContinuous supply and extractStep 1: Determine the whole building ventilation rate from Table2. Allow for infiltration by subtracting from this value:

for multi-storey dwellings: 0.04 x gross internal volume of the dwelling heated space (m3);

for single-storey dwellings: 0.06 x gross internal volume of the dwelling heated space (m3).

Step 2: Calculate the whole dwelling air extract rate at maximum operation by summing the individual room rates forminimum high rate from Table 1.

(For sanitary accommmodation only, as an alternative, thepurge ventilation provisions given in ADF 2006 can be usedwhere security is not an issue. In this case minimum highextract rate for the sanitary accommodation should be omittedfrom the step 2 calculation).

Step 3: The required airflow rates are as follows:

the maximum extract rate (e.g. boost) should be at least the greater of step 1 and step 2. Note that the maximum individual room extract rate should be at least those given in table 1. for minimum high rate.

the minimum air supply rate should be at least the whole building ventilation rate found in step 1.

2.7 ADF 2010 Ventilation calculationsDesign of MVHR systemsThe MVHR system has been sized for the winter period.Additional ventilation may be required during the warmermonths and it has been assumed that the provisions for purgeventilation (e.g. openable windows) could be used.

Step 1: For any design air permeability, determine the wholedwelling ventilation supply rate from Table 2.

As an alternative where the design air permeability is intendedto be leakier than (>) 5m3/(h.m2) 50 Pa, allow for infiltrationfor all dwelling types by subtracting from the whole dwellingventilation supply rate from Table 2; 0.04 x gross internal volume of the dwelling heated space (m3).

Step 2: Calculate the whole dwelling extract ventilation rate bysumming the individual room rates for minimum high rate fromTable 1.



the maximum whole dwelling extract ventilation rate (e.g. boost) should be at least the greater of step 1 and step 2. Note that the maximum individual room extract rate should be at least those given in table 1. for minimum high rate.


For Scotland refer to BRE Digest 398.

4 21. 06. 13. Leaflet Number 671599


4.0 Ducting arrangements

Air supply to lounge via Air Valve (Part no. V150S) in ceilings.

Extract air from kitchen/bathroom via Air Valve (Part no. V150S) in ceilings.

Minimum 300mm

Exhaust air from kitchen/bathroom to outside via louvre grille(Part no. PVC604).

Intake air from outsidevia louvre grille(Part no. PVC604).

Supply duct only from external grille to the unit needs to be insulated.

Exhaust air from kitchen/bathroom to outside via air brick(Part no. PVC501).

Intake air from outsidevia air brick(Part no. PVC501).

Supply duct only from external air brick to the unit needs to be insulated.

Insulated supply duct.


Minimum 300mm

Air supply to lounge via Air Valve (Part no. V125S) in ceilings.Extract air from

kitchen/bathroom via Air Valve (Part no. V125S) in ceilings.

Air supply to bedrooms via Air Valve (Part no. V125S) in ceilings.

Top of ceiling void.


Nuaire MRXBOX95B-WH1H wall mounted unit on a patress.


Nuaire MRXBOX95B-WH1H wall mounted unit on a patress.

MVHR-DRAINCondensate drain, uninsulated drain pipe with 10 fall running to SVP.

MVHR-DRAINCondensate drain, uninsulated drain pipe with 10 fall running to SVP.o

o

Figure 7a. Typical ducted arrangement for a wall mounted unit using 150mm dia. ducting.

Figure 7b. Typical ducted arrangement for a wall mounted unit using rectangular 204 x 60mm ducting.

ALSO FROM NUAIRE -

New range of thermal ducting,

an all-in-one insulated ducting system.

(see installation document 671620).

5 21. 06. 13. Leaflet Number 671599


For good EMC engineering practice, any sensor cables or switched live cables should not be

placed within 50mm of other cables or on the same metal cable tray as other cables.

5.0 Electrical Connection Please note: the electrical connection of the unit must be be carriedout by a qualified electrician.

The unit is supplied with a flexible cord for connection to the mainssupply.

Electrical details:-Voltage: 240V 1ph 50Hz

Consumption: WH1H - 1.3 Amp

Fuse rating: 3 Amp

NOTE This unit must be earthed.

The three core cable from the mains power supply should be connected to a fixed wiring installation, via a fused isolator, inaccordance with current IEE wiring regulations.

Fuse 2A

MAINS230V50Hz

Roomlight

Light switch

(Double Pole)

N

L

Fuse 2A

MAINS230V50Hz

Roomlights

Light switches (Double

Pole)

N

L

3 Poleisolator

3 Poleisolator

Kitchen switch

Kitchen switch

Blue

Brown

Black

Optional summer boost switch

Supply cordfrom unit

Green/yellow

Blue

Brown

Black



Grey

Grey

Green/yellow

Unit serving kitchen and bathroom

Unit serving kitchen and two bathrooms

Figure 9.

Figure 10.

SW

L2

L

SW

L1

L

N

CN

7 E

XT

RA

CT

CN

6 S

UP

PLYBLU

WHI

YEL

RED

SU

PP

LYB

YP

AS

S SUPPLY FANEXTRACT FAN

BLU

BRN

BRN

BLU

EXTRACT FAN

BLU

BRN

EX

TE

RN

AL

PU

MP

BLU

WHI

YELI

RED

FAIL

CN

8

TH

1 TH

2

L

N

Supply Supply Extract Extract Trickle Boost Trickle Boost

CN

5

Connection to Remote Fail Indicator Ref: MRXBOX95LH-RFI

3

2

Note: Wiring is for reference purposes only as the connections above are factory fitted.The unit is pre-wired with a 2 metre fly lead.

Figure 8.

Disconnection fromthe supply mains mustbe incorporated withinthe fixed wiring inaccordance with thewiring regulations andshall have a minimumcontact separation of 3mm.


6 21. 06. 13. Leaflet Number 671599


The filters fitted inside the unit are protected with a plastic film. Prior to commissioning remove the covers

(fig 13), take off the film and replace.

Figure 11. Detail of unit controlon front panel.

Filter covers

Figure 12. Removingthe two filter coverson the front panel ofthe unit.

Filter being removed

Filter cover

Figure 13.The filterscan be removed bypulling on the blacktab on the visible endof the filters.

Technical or commercial considerations may, from time to time, make it necessary to alter the design, performance and dimensions of equipment and the right is reserved to make such changes without prior notice.

Isolation - Before commencing work make sure that the unit, switched live and Nuaire control are electrically

isolated from the mains supply and switched live supply.

Humidityadjustment.

6.0 Commissioning

1. For the required air flow rates please refer to the design specification for the property, follow 2.4, or refer to building regulations ADF 2006/2010.

2. The unit is supplied with independent control for both normal and boost airflows. (see fig. 11).

3. Correct commissioning is essential to ensure the ventilation air flowrates are met. It also ensures the unit is not over ventilating and causing excessive power consumption.

4. Commissioning should be carried out in accordance with building regulations document Domestic ventilation compliance guide. A calibrated moving vane anemometer and hood will be required to carry out commissioning.

5. Adjustment valves should be locked in place to prevent further adjustment.

6. Once commissioned the home owner / tenant should be informed that the unit should not be adjusted as it will have a detrimental effect on the indoor air quality and could result in condensation and mould growth. The label covering the control has an adhesive panel which should be removed post commissioning to prevent tampering.

6.1 Summertime boost facilityThe unit has to ability to override both the trickle and boostspeeds to operate the fan to maximum airflow. See wiring diagram for details of operating this facility.

6.2 Humidity adjustmentThis product contains an internal humidity sensor fitted into theairflow extracting from the wet rooms. When the unit sensesthat the humidity exceeds the set point the unit will boost tothat set by the commissioned boost speed. The set point can be found on the front of the unit (see Fig 11) and is at its leastsensitive when turned fully clockwise. Note that the sensor ismeasuring humidity from all the wet rooms at the same timeand should not be relied on to solely boost the unit. Additionalswitch should be used local to the wet rooms (see wiring diagrams).

7.0 Maintenance/Cleaning

We recommend that the two G3 fiters are inspected after 6 months, and replaced every 12 to 18 months.

The filters can be removed from the unit by removing the twofilter covers on the front panel of the unit. Take hold of the twocircular tabs either end of the filter covers and pull out.

The filter can now be extracted by pulling the removal loop onthe front edge of the filter. Once the filters have been inspectedreturn or replace them as necessary.

Inspect the heat exchanger every 5 years. Generally check for damage and security of components. Refit cover.

8.0 Replacement of PartsShould any component need replacing Nuaire keep extensivestocks for quick delivery. Ensure that the unit is electrically isolated, before carrying out any work.Note: The supply cable must be replaced by an electrically competent person. When ordering spare parts, please quote the serial number of the unit and the ARC number of the purchase if possible.(This information will be available on the fan label).

9.0 WarrantyThe 5 year warranty starts from the day of delivery andincludes parts and labour for the first year and parts only forthe remaining 4 years. This warranty is conditional on plannedmaintenance being undertaken.

10.0 Service EnquiriesNuaire can assist you in all aspects of service. Our service department will be happy to provide any assistance required, initially by telephone and If necessary arrange for an engineer to call.

Technical Supporton 029 2085 8400

7 21. 06. 13. Leaflet Number 671599

To comply with EC Council Directives 2006/42/EC Machinery Directive and2004/108/EC (EMC).

To be read in conjunction with the relevant Product Documentation (see 2.1)

1.0 GENERAL

1.1 The equipment referred to in this Declaration of Incorporation is supplied by Nuaire to be assembled into a ventilation system which may or may not include additional components.

The entire system must be considered for safety purposes and it is the responsibility of the installer to ensure that all of the equipment is installed in compliance with the manufacturers recommendations and with due regard to current legislation and codes of practice.

2.0 INFORMATION SUPPLIED WITH THE EQUIPMENT

2.1 Each item of equipment is supplied with a set of documentation which provides the information required for the safe installation and maintenance of the equipment. This may be in the form of a Data sheet and/or Installation and Maintenance instruction.

2.2 Each unit has a rating plate attached to its outer casing. The rating plate provides essential data relating to the equipment such as serial number, unit code and electrical data. Any further data that may be required will be found in the documentation. If any item is unclear or more information is required, contact Nuaire.

2.3 Where warning labels or notices are attached to the unit the instructions given must be adhered to.

3.0 TRANSPORTATION, HANDLING AND STORAGE

3.1 Care must be taken at all times to prevent damage to the equipment. Note that shock to the unit may result in the balance of the impeller being affected.

3.2 When handling the equipment, care should be taken with corners and edges and that the weight distribution within the unit is considered. Lifting gear such as slings or ropes must be arranged so as not to bear on the casing.

3.3 Equipment stored on site prior to installation should be protected from the weather and steps taken to prevent ingress of contaminants.

4.0 OPERATIONAL LIMITS

4.1 It is important that the specified operational limits for the equipment are adhered to e.g. operational air temperature, air borne contaminants and unit orientation.

4.2 Where installation accessories are supplied with the specified equipment eg. wall mounting brackets. They are to be used to support the equipment only. Other system components must have separate provision for support.

4.3 Flanges and connection spigots are provided for the purpose of joining to duct work systems. They must not be used to support the ductwork.

4.4 In the event of RF interference the fan may change speed. This is normal and will have no adverse effect on the fan. The speed will return to normal once the interference has subsided.

5.0 INSTALLATION REQUIREMENTS

In addition to the particular requirements given for the individual product, the

following general requirements should be noted.

5.1 Where access to any part of equipment which moves, or can become electricallylive are not prevented by the equipment panels or by fixed installation detail (eg ducting), then guarding to the appropriate standard must be fitted.

5.2 The electrical installation of the equipment must comply with the requirements

of the relevant local electrical safety regulations.

5.3 For EMC all control and sensor cables should not be placed within 50mm or on

the same metal cable tray as 230V switched live, lighting or power cables and

any cables not intended for use with this product.

6.0 COMMISSIONING REQUIREMENTS

6.1 General pre-commissioning checks relevant to safe operation consist of the

following:

Ensure that no foreign bodies are present within the fan or casing.

Check electrical safety. e.g. Insulation and earthing.

Check guarding of system.

Check operation of Isolators/Controls.

Check fastenings for security.

6.2 Other commissioning requirements are given in the relevant product documentation.

7.0 OPERATIONAL REQUIREMENTS

7.1 Equipment access panels must be in place at all times during operation of the

unit, and must be secured with the original fastenings.

7.2 If failure of the equipment occurs or is suspected then it should be taken out of

service until a competent person can effect repair or examination. (Note that

certain ranges of equipment are designed to detect and compensate for fan failure).

8.0 MAINTENANCE REQUIREMENTS

8.1 Specific maintenance requirements are given in the relevant product documentation.

8.2 It is important that the correct tools are used for the various tasks required.

8.3 If the access panels are to be removed for any reason the electrical supply to the

unit must be isolated.

8.4 A minimum period of two minutes should be allowed after electrical disconnection

before access panels are removed. This will allow the impeller to come to rest.

NB: Care should still be taken however since airflow generated at some other point in the system can cause the impeller to windmill even when power is not present.

8.5 Care should be taken when removing and storing access panels in windy

conditions.

INFORMATION FOR SAFE INSTALLATION, OPERATION AND MAINTENANCE OF NUAIRE VENTILATION EQUIPMENT

DECLARATION OF INCORPORATION AND INFORMATIONFOR SAFE INSTALLATION, OPERATION AND MAINTENANCE

DECLARATION OF CONFORMITY

We declare that the machinery named below is intended to be assembledwith other components to constitute a system of machinery. All parts except for moving parts requiring the correct installation of safety guardscomply with the essential requirements of the Machinery Directive. The machinery shall not be put into service until the system has been declared to be in conformity with the provisions of the EC Machinery Directive.

Designation of machinery: MRXBOX95B-WH1H

Machinery Types: Mechanical Ventilation with Heat Recovery, Summer Bypassand Integral Humidistat

Relevant EC Council Directives: 2006/42/EC (Machinery Directive)

Applied Harmonised Standards: BS EN ISO 12100-1, BS EN ISO 12100-2, EN60204-1, BS EN ISO 9001, BS EN ISO 13857

Applied National Standards: BS848 Parts 1, 2.2 and 5

Note: All standards used were current and valid at the date of signature.

Signature of manufacture representatives:Name: Position: Date:

1) C. Biggs Technical Director 01. 11. 12

2) A. Jones Manufacturing Director 01. 11. 12

We declare that the machine named below conforms to the requirements ofEC Council Directives relating to Electromagnetic Compatibility and Safetyof Electrical Equipment.

Designation of machinery: MRXBOX95B-WH1H

I & M Serial No.: 671599


Relevant EC Council Directives: 2004/108/EC (EMC), 2006/95/EC (Low Voltage Directive)

Applied Harmonised Standards: EN55014-1, EN55014-2, EN61000-3-2, EN61000-3-3, EN60335-2-80

Basis of Self Attestation: Quality Assurance to BS EN ISO 9001BSI Registered Firm Certificate No. FM 149




Nuaire Ltd,Western Industrial Estate,Caerphilly CF83 1NA.


Standard Assessment Procedure 2005 Appendix Q MVHR Installation Guide

Installation Guide and Checklist

Mechanical Ventilation with Heat Recovery

(Version 11 February 2011)

The Electric Heating and Ventilation Association have developed this guidance and

checklist document in partnership with the Residential Ventilation Association (a HEVAC association), BRE and EST.

NOTE: This guide and checklist has been superseded for dwellings assessed under

The Building Regulations 2010, specifically SAP 2009 and Approved Documents L and F. Completion of this document is therefore only required for dwellings assessed by

SAP 2005.

Customer Details Customer Name: Address: Telephone Number: Date of Installation: Name of Lead Contractor: Design Project Number:

It should be noted that this guidance is not intended to replace product manufacturer installation instructions; it is a generic addition which defines good

practice. Installers are advised to complete this form for each installation and keep a copy to provide to Building Control Officers in case requested.

Standard Assessment Procedure 2005 Appendix Q MVHR Installation Guide Page 2 of 6

Introduction This document is to be used in support of the SAP Appendix Q scheme which provides tested performance values for MVHR products. Note that all checklist items must be answered YES in order for the SAP Appendix Q test figures to be used in As built SAP calculations. If any checklist items are answered NO then SAP default figures must be used. Systems must be designed by a manufacturer designer and sized correctly to qualify for SAP Appendix Q figures. SECTION 1: INSTALLATION GUIDANCE

1. Ductwork Installation Decision Yes, No or

N/A Have the ducts been installed with as little air resistance and leakages as possible (flexible ducts should be avoided)? Note: Refer to HVCA DW/143 document A Practical Guide to Ductwork Leakage Testing for detailed guidance on air tightness. Rigid plastic ducting is recommended and flexible duct should only be used in very short lengths and mainly just to connect the ductwork to the units/diffusers or to overcome particular obstructions.

If flexible ducting has been used, has it been pulled taut to minimise system resistance?

Has the number of duct bends been minimised to ensure adequate air flow and least resistance? Bends should have a minimum radius at least the same as the diameter of the ducting used? Refer to Figure 1 if using flexible ducting

Have the fans and ducting placed in unheated voids been insulated to reduce the possibility of condensation forming (see notes below)? Note: Ducts should be insulated with the equivalent of at least 25mm of insulating material with a thermal conductivity of 0.04W/mK. Where a duct rises vertically it may be necessary to fit a condensation trap in order to prevent backflow of any moisture in the product. Insulation should be applied to both warm and cold air ducts. Cold air ducts should be wrapped additionally with a vapour barrier outside the insulation. Ducts with cold air running in warm environments will condense on the outside of the duct.

Have recommended duct jointing collars and components been used to ensure appropriate duct performance (duct runs should be as air tight as possible)? Note: All the joints should be sealed correctly either using duct tape or silicon.


Figure 1 Ductwork Visual Guide

Source: Approved Document F (England & Wales) 2006

2. Unit Fixing Decision Yes, No or

N/A Has the heat recovery unit been effectively insulated? Note: If the unit is not pre-insulated then ensure additional insulation is installed around the unit to minimise heat loss

Has the heat recovery unit been fixed to a stable element of the building fabric (e.g. wall or floor) using manufacturer recommended/supplied fixing brackets?

Has the condensation drain been fitted and the pipe insulated?

Have approved acoustic/anti-vibration mountings been used? Note: Special attention is needed to avoid transmission and stress to duct joints

Has the unit been installed in a position that will permit access for maintenance purposes?

Have all grilles or ductwork that penetrate the buildings air barrier, as identified in the construction drawings, been sealed to ensure continuity of the air barrier?


Figure 2 Sample Mounting Positions

3. Electrical Connection Decision Yes, No or

N/A Has the rating label been verified to establish suitability for the installation strategy and whether an earth is required (e.g. voltage, class I or II product status)?

Has a local isolator been provided to enable the unit to be isolated for maintenance purposes?

Has the unit been fused in accordance with its power rating?

SECTION 2: COMMISSIONING GUIDANCE


1. System Balancing & Calibration Decision

Yes, No or N/A

Has the air flow been checked using a proprietary device such as an anemometer (recommended)?

Have the controls been set following a defined process? Refer to figure 3 flow diagram

Have all distribution grilles been locked where possible to minimise unapproved occupant adjustment?

Figure 3

Ensure all external and internal windows and doors are closed

Set fan speed using manufacturer data table

Set normal daytime air flow on extract points starting at location furthest from

unit

Set normal daytime air flow on input points starting at location furthest from

unit

Step 1

Step 2

Step 3

Step 4

Step 5 Set fan speed to boost and measure extract rates at each location, adjust

fan speed setting as required to achieve required flow


2. Handover and Control/Maintenance Advice Decision Yes, No or

N/A Has the customer been supplied with suitable documentation detailing maintenance and operational requirements?

Has the customer been advised that opening windows is not recommended during normal use in order to ensure the energy efficient operation and performance of the balanced system?

Has the customer been advised not to seal natural air flows from room to room (e.g. avoid door seals and thick pile carpets)

Has the customer been advised not to alter settings post-commissioning?

Has the customer been advised to clean the filters as explained in the manufacturers instructions?

The unit must remain switched on at all times to maintainventilation within the dwelling. Turning the unit off willcause long term damage to the unit and building fabric.

This appliance is not intended for use by persons (including children) with reduced physical, sensory ormental capabilities, or lack of experience and knowledge,unless they have been given supervision or instructionconcerning the use of the appliance by a person for theirsafety. Children should be supervised so that they do notplay with the appliance.

MRXBOX95B-WM2HMechanical Ventilation Unit with Heat Recovery, Summer Bypass and Integral Humidistat

Installation and Maintenance

1.0 Introduction

MRXBOX95B-WM2H wall mounted unit is designed to providemechanical supply and extract ventilation with heat recovery,summer bypass and integral humidistat.The unit is fitted with two independent fans. Each fan has fullspeed control for background and boost ventilation rates. To recover heat from the extract air the heat exchanger block is utilised. The heat exchanger can recover up to 95% of the normally wasted heat.

The bypass damper opens automatically via a wax actuator whenthe outside air reaches 20C, when the outer air temperaturereturns below this level the unit returns to its original state.Outside air supplied through the bypass is still being filtered, so the air quality is optimal, irrespective of the bypass setting(open or closed)

2.0 InstallationInstallation must be carried out by competent personnel inaccordance with the appropriate authority and conforming to all statutory governing regulations. All mains wiring must be in accordance with the current I.E.E. Regulations, or theappropriate standards. Ensure that the mains supply (Voltage, Frequency and Phase) complies with the rating label.

Please note a clear working space is required around theinstalled unit to allow the cover to be removed and provide sufficient access for maintenance such as filter change.Please allow a minimum of 350mm in front of the unit.

The fan must be installed indoors, on a suitable wall awayfrom direct sources of frost, heat, water spray or moisturegeneration. For a vibration-free result the unit must be mounted to a solid wall.

The unit is designed for wall mounting only via a patress.1. One part of the mounting bracket should be offered up to

the wall, ensuring its located horizontally. Mark the fixing points through the pre drilled holes in the bracket and install with screws (by others), ensuring the interlock side is at the top, fig. 2.

2. Fix the remaining part of the bracket to the unit using the M5 screws ensuring the interlock side is at the bottom, fig.3a.

3. Install the unit on the wall by ensuring the bracket on the unit interlocks over the wall mounted bracket (fig. 3b).

Note: Care must be taken to ensure the unit is installed truein all 3 dimensions. Failure to do so may result in overflowfrom the internal condensation drip tray.

Nuaire Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA T: 029 2085 8400 F: 029 2085 8444 E: [email protected] W: www.nuaire.co.uk

1 21. 06. 13 Leaflet Number 671600

Extract air from house

Intake air from outside

Exhaust air from houseto outside

Supply air to house

Figure 1. Airflow through unit.

The EMC Directive 2004/108/EC The Low Voltage Directive 2006/95/EC

Figure 3a. Fixing the mountingbracket to the rear of unit.

Pre-fittedsupport feet

Bracket

Figure 3b. Mounting the uniton the wall mounted bracket.

Figure 2. Fixing the mounting bracket to the wall via a patress.

125mm dia. ducting in ceiling void.

First floor ceiling.

Side view of unit mounted on thewall in a cupboard.(Note: The unit must be fixed to a suitable patress).

MVHR-DRAINCondensate drain,uninsulated drain pipe with 10 fall running to SVP.

o

Supply air valve in ceiling.

Figure 4. Typical example of a cupboard mounted unit on a patressusing the bracket.

2 21. 06. 13 Leaflet Number 671600

Installation and Maintenance MRXBOX95B-WM2H Mechanical Ventilation with Heat Recovery & Summer Bypass

Any air intake terminal MUST be installed in accordance with theappropriate regulation. As a guide, the BS5440 series of British Standards deals withthis issue and currently states that an air intake must be at aminimum distance of 300mm from a gas boiler balanced flue.

Installers are advised to be aware of the requirements of thisstandard when installing through the wall supply air ducting.

Similarly, supply and extract air grilles should be at least300mm apart.

Figure 5a. Wet option.Condensate pipe connection to unit and a typical example of a U trap drainpipe.

Figure 5b. MVHR-DRAIN option. Condensate drain, uninsulated drain pipe with 10o fall running to SVP.

5o Drop

Collar

2.1 Condensate Drain1. Remove the front cover from the unit.

2. Insert the drain connector through the base of the unit from outside. The condensate must be discharged under a water level in a U-trap drainpipe or an alternative drain method which acts as an airlock.

3. Ensure the drain connector forms a seal with the drain tray applying sealant if necessary. This condensate discharge connection is suitable for 21.5mm dia. overflow pipe. Solvent cement should be used to make the joint.

4. If using a U-trap please ensure the U-trap has been filled to a suitable level of water to avoid any air locks.

5. If the condensation pipe is fitted in an unheated space the pipe should be in insulated to prevent freezing.

Nuaire recommend MVHR-DRAIN be used as the primarycondensate take-off. (see figure 5b/7a/7b).

2.2 Extract/input areasThe unit is designed to extract air from all wet rooms e.g. bathroom, kitchen, en-suite, utility room (with sink). WCs do not need to be ventilated if openable windows are fitted.

Supply air should be to all habitable rooms e.g. bedrooms andlounge. Extract / input grilles should be adjustable valve types(not supplied).External grilles to have a minimum free area of 12,250 sq mm.

2.3 DuctingBefore commencing ducting installation reference should bemade to building regulations document Domestic ventilationcompliance guide. This document supports ADF2010 anddetails installation, testing and commissioning of all ventilationsystems.

It is recommended that rigid ducting be used it all times. Flexible ducting has a very high resistance and it is impossibleto calculate how much resistance will be on a system if used.

If used the flexible ducting must be kept to a minimum andshould always be pulled taut. A maximum of 500mm should be used on each leg.

To prevent condensation on the outside of the outside air inletduct and the air outlet duct from the MRXBOX95B-WM2H,these ducts should be insulated.

Ducting must be installed in such a way that resistance to airflow is minimised. Bends should be kept to a minimum.

A minimum distance of 200mm between the appliance and any bends in ductwork is recommended.

Ideally 125mm diameter or 204 x 60mm rectangular ductingshould be used. (Refer to dwelling design drawing, figure 7aand 7b on page 4 for further information).

Ducting joints must be sealed with silicone type sealant andshall be adequately and reliably fixed to the appliance.

2.4 Ventilation flow ratesTable 1.

ADF2006 / 2010 Extract ventilation rates

Room Min high rate Min low rate

Kitchen 13 l/s

Utility room 8 l/s

Bathroom 8 l/s

Sanitary accommodation 6 l/s

Table 2.

Whole dwelling ventilation rates

Number of bedrooms in dwelling

1 2 3 4 5

Whole 13 17 21 25 29dwelling ventilation rate l/s1, 2

Notes:1, In addition, the minimum ventilation rate be should be notless than 0.3 l/s per m2 of internal floor area. (This includes all floors, e.g. for a two-story building add theground and first floor areas).

2, This is based on two occupants in the main bedroom anda single occupant in all other bedrooms. This should be usedas the default value. If a greater level of occupancy isexpected add 4 l/s per occupant.

Total extract rate shouldbe at least the wholedwelling ventilation rategiven in table 2.

3 Leaflet Number 671600 December 2012


603

50

3

Mounting bracket

353

Side viewView from front with cover removed

View from top

Spigots

4 x 125mm dia.

41916

90

172

172

3.0 Dimensions Figure 6.

2.5 Air permeability and infiltrationIs the uncontrolled exchange of air between inside and outsidethrough cracks, porosity and other unintentional openings inthe building. ADF2006 gives an allowance for this in both multiand single storey buildings, however ADF2010 has anallowance for multi storey only. Additionally ADF2010 onlyapplies this allowance for dwellings leaker than 5 m3/(h.m2) at50Pa. (See below).

2.6 ADF 2006 Ventilation calculationsContinuous supply and extractStep 1: Determine the whole building ventilation rate from Table2. Allow for infiltration by subtracting from this value:

for multi-storey dwellings: 0.04 x gross internal volume of the dwelling heated space (m3);

for single-storey dwellings: 0.06 x gross internal volume of the dwelling heated space (m3).

Step 2: Calculate the whole dwelling air extract rate at maximum operation by summing the individual room rates forminimum high rate from Table 1.



the maximum extract rate (e.g. boost) should be at least the greater of step 1 and step 2. Note that the maximum individual room extract rate should be at least those given in table 1. for minimum high rate.


2.7 ADF 2010 Ventilation calculationsDesign of MVHR systemsThe MVHR system has been sized for the winter period.Additional ventilation may be required during the warmermonths and it has been assumed that the provisions for purgeventilation (e.g. openable windows) could be used.

Step 1: For any design air permeability, determine the wholedwelling ventilation supply rate from Table 2.

As an alternative where the design air permeability is intendedto be leakier than (>) 5m3/(h.m2) 50 Pa, allow for infiltrationfor all dwelling types by subtracting from the whole dwellingventilation supply rate from Table 2; 0.04 x gross internal volume of the dwelling heated space (m3).

Step 2: Calculate the whole dwelling extract ventilation rate bysumming the individual room rates for minimum high rate fromTable 1.



the maximum whole dwelling extract ventilation rate (e.g. boost) should be at least the greater of step 1 and step 2. Note that the maximum individual room extract rate should be at least those given in table 1. for minimum high rate.


For Scotland refer to BRE Digest 398.

4 21. 06. 13 Leaflet Number 671600


4.0 Ducting arrangements

Air supply to lounge via Air Valve (Part no. VS125) in ceilings.

Extract air from kitchen/bathroom via Air Valve (Part no. VS125) in ceilings.

Minimum 300mm

Exhaust air from kitchen/bathroom to outside via louvre grille(Part no. PVC504).

Intake air from outsidevia louvre grille(Part no. PVC504).

Supply duct only from external grille to the unit needs to be insulated.

Exhaust air from kitchen/bathroom to outside via air brick(Part no. PVC501).

Intake air from outsidevia air brick(Part no. PVC501).

Supply duct only from external air brick to the unit needs to be insulated.



Minimum 300mm

Air supply to lounge via Air Valve (Part no. V125S) in ceilings.Extract air from

kitchen/bathroom via Air Valve (Part no. V125S) in ceilings.




Nuaire MRXBOX95B-WM2H wall mounted unit on a patress.

Air supply to bedrooms via Air Valve (Part no. VS125) in ceilings.

Nuaire MRXBOX95B-WM2H wall mounted unit on a patress.

MVHR-DRAINCondensate drain, uninsulated drain pipe with 10 fall running to SVP.

MVHR-DRAINCondensate drain, uninsulated drain pipe with 10 fall running to SVP.o

o

Figure 7a. Typical ducted arrangement for a wall mounted unit using 125mm dia. ducting.

Figure 7b. Typical ducted arrangement for a wall mounted unit using rectangular 204 x 60mm ducting.

ALSO FROM NUAIRE -

New range of thermal ducting,

an all-in-one insulated ducting system.

(see installation document 671620).

5 21. 06. 13 Leaflet Number 671600


For good EMC engineering practice, any sensor cables or switched live cables should not be

placed within 50mm of other cables or on the same metal cable tray as other cables.

Fuse 2A

MAINS230V50Hz

Roomlight

Light switch

(Double Pole)

N

L

Fuse 2A

MAINS230V50Hz

Roomlights

Light switches (Double

Pole)

N

L

3 Poleisolator

3 Poleisolator

Kitchen switch

Kitchen switch

Blue

Brown

Black



Green/yellow

Blue

Brown

Black



Grey

Grey

Green/yellow

Unit serving kitchen and bathroom

Unit serving kitchen and two bathrooms

Figure 9.

Figure 10.

SW

L2

L

SW

L1

L

N

CN

7 E

XT

RA

CT

CN

6 S

UP

PLYBLU

WHI

YEL

RED

SU

PP

LYB

YP

AS

S SUPPLY FANEXTRACT FAN

BLU

BRN

BRN

BLU

EXTRACT FAN

BLU

BRN

EX

TE

RN

AL

PU

MP

BLU

WHI

YELI

RED

FAIL

CN

8

TH

1 TH

2

L

N

Supply Supply Extract Extract Trickle Boost Trickle Boost

CN

5

Connection to Remote Fail Indicator Ref: MRXBOX95LH-RFI

3

2

Note: Wiring is for reference purposes only as the connections above are factory fitted.The unit is pre-wired with a 2 metre fly lead.

Figure 8.



5.0 Electrical Connection Please note: the electrical connection of the unit must be be carriedout by a qualified electrician.

The unit is supplied with a flexible cord for connection to the mainssupply.

Electrical details:-Voltage: 240V 1ph 50Hz

Consumption: WM2H - 1.3 Amp

Fuse rating: 3 Amp

NOTE This unit must be earthed.

The three core cable from the mains power supply should be connected to a fixed wiring installation, via a fused isolator, inaccordance with current IEE wiring regulations.

6 21. 06. 13 Leaflet Number 671600


The filters fitted inside the unit are protected with a plastic film. Prior to commissioning remove the covers

(fig 13), take off the film and replace.

Filter covers

Figure 12. Removingthe two filter coverson the front panel ofthe unit.

Filter being removed

Filter cover

Figure 13.The filterscan be removed bypulling on the blacktab on the visible endof the filters.

Technical or commercial considerations may, from time to time, make it necessary to alter the design, performance and dimensions of equipment and the right is reserved to make such changes without prior notice.

Isolation - Before commencing work make sure that the unit, switched live and Nuaire control are electrically

isolated from the mains supply and switched live supply.

Figure 11. Detail of unit controlon front panel.

Humidityadjustment.

6.0 Commissioning

1. For the required air flow rates please refer to the design specification for the property, follow 2.4, or refer to building regulations ADF 2006/2010.

2. The unit is supplied with independent control for both normal and boost airflows. (see fig. 11).

3. Correct commissioning is essential to ensure the ventilation air flowrates are met. It also ensures the unit is not over ventilating and causing excessive power consumption.

4. Commissioning should be carried out in accordance with building regulations document Domestic ventilation compliance guide. A calibrated moving vane anemometer and hood will be required to carry out commissioning.

5. Adjustment valves should be locked in place to prevent further adjustment.

6. Once commissioned the home owner / tenant should be informed that the unit should not be adjusted as it will have a detrimental effect on the indoor air quality and could result in condensation and mould growth. The label covering the control has an adhesive panel which should be removed post commissioning to prevent tampering.

6.1 Summertime boost facilityThe unit has to ability to override both the trickle and boostspeeds to operate the fan to maximum airflow. See wiring diagram for details of operating this facility.

6.2 Humidity adjustmentThis product contains an internal humidity sensor fitted into theairflow extracting from the wet rooms. When the unit sensesthat the humidity exceeds the set point the unit will boost tothat set by the commissioned boost speed. The set point can befound on the front of the unit (see Fig 11) and is at its least sensitive when turned fully clockwise. Note that the sensor ismeasuring humidity from all the wet rooms at the same timeand should not be relied on to solely boost the unit. Additionalswitch should be used local to the wet rooms (see wiring diagrams).

7.0 Maintenance/Cleaning

We recommend that the two G3 fiters are inspected after 6 months, and replaced every 12 to 18 months.

The filters can be removed from the unit by removing the twofilter covers on the front panel of the unit. Take hold of the twocircular tabs either end of the filter covers and pull out.

The filter can now be extracted by pulling the removal loop onthe front edge of the filter. Once the filters have been inspectedreturn or replace them as necessary.

Inspect the heat exchanger every 5 years. Generally check for damage and security of components. Refit cover.

8.0 Replacement of PartsShould any component need replacing Nuaire keep extensivestocks for quick delivery. Ensure that the unit is electrically isolated, before carrying out any work.Note: The supply cable must be replaced by an electrically competent person. When ordering spare parts, please quote the serial number of the unit and the ARC number of the purchase if possible.(This information will be available on the fan label).

9.0 WarrantyThe 5 year warranty starts from the day of delivery andincludes parts and labour for the first year and parts only forthe remaining 4 years. This warranty is conditional on plannedmaintenance being undertaken.

10.0 Service EnquiriesNuaire can assist you in all aspects of service. Our service department will be happy to provide any assistance required, initially by telephone and If necessary arrange for an engineer to call.

Technical Support on 029 2085 8400

7 21. 06. 13 Leaflet Number 671600

To comply with EC Council Directives 2006/42/EC Machinery Directive and2004/108/EC (EMC).

To be read in conjunction with the relevant Product Documentation (see 2.1)

1.0 GENERAL

1.1 The equipment referred to in this Declaration of Incorporation is supplied by Nuaire to be assembled into a ventilation system which may or may not include additional components.

The entire system must be considered for safety purposes and it is the responsibility of the installer to ensure that all of the equipment is installed in compliance with the manufacturers recommendations and with due regard to current legislation and codes of practice.

2.0 INFORMATION SUPPLIED WITH THE EQUIPMENT

2.1 Each item of equipment is supplied with a set of documentation which provides the information required for the safe installation and maintenance of the equipment. This may be in the form of a Data sheet and/or Installation and Maintenance instruction.

2.2 Each unit has a rating plate attached to its outer casing. The rating plate provides essential data relating to the equipment such as serial number, unit code and electrical data. Any further data that may be required will be found in the documentation. If any item is unclear or more information is required, contact Nuaire.

2.3 Where warning labels or notices are attached to the unit the instructions given must be adhered to.

3.0 TRANSPORTATION, HANDLING AND STORAGE

3.1 Care must be taken at all times to prevent damage to the equipment. Note that shock to the unit may result in the balance of the impeller being affected.

3.2 When handling the equipment, care should be taken with corners and edges and that the weight distribution within the unit is considered. Lifting gear such as slings or ropes must be arranged so as not to bear on the casing.

3.3 Equipment stored on site prior to installation should be protected from the weather and steps taken to prevent ingress of contaminants.

4.0 OPERATIONAL LIMITS

4.1 It is important that the specified operational limits for the equipment are adhered to e.g. operational air temperature, air borne contaminants and unit orientation.

4.2 Where installation accessories are supplied with the specified equipment eg. wall mounting brackets. They are to be used to support the equipment only. Other system components must have separate provision for support.

4.3 Flanges and connection spigots are provided for the purpose of joining to duct work systems. They must not be used to support the ductwork.

4.4 In the event of RF interference the fan may change speed. This is normal and will have no adverse effect on the fan. The speed will return to normal once the interference has subsided.

5.0 INSTALLATION REQUIREMENTS

In addition to the particular requirements given for the individual product, the

following general requirements should be noted.

5.1 Where access to any part of equipment which moves, or can become electricallylive are not prevented by the equipment panels or by fixed installation detail (eg ducting), then guarding to the appropriate standard must be fitted.

5.2 The electrical installation of the equipment must comply with the requirements

of the relevant local electrical safety regulations.

5.3 For EMC all control and sensor cables should not be placed within 50mm or on

the same metal cable tray as 230V switched live, lighting or power cables and

any cables not intended for use with this product.

6.0 COMMISSIONING REQUIREMENTS

6.1 General pre-commissioning checks relevant to safe operation consist of the

following:

Ensure that no foreign bodies are present within the fan or casing.

Check electrical safety. e.g. Insulation and earthing.

Check guarding of system.

Check operation of Isolators/Controls.

Check fastenings for security.

6.2 Other commissioning requirements are given in the relevant product documentation.

7.0 OPERATIONAL REQUIREMENTS

7.1 Equipment access panels must be in place at all times during operation of the

unit, and must be secured with the original fastenings.

7.2 If failure of the equipment occurs or is suspected then it should be taken out of

service until a competent person can effect repair or examination. (Note that

certain ranges of equipment are designed to detect and compensate for fan failure).

8.0 MAINTENANCE REQUIREMENTS

8.1 Specific maintenance requirements are given in the relevant product documentation.

8.2 It is important that the correct tools are used for the various tasks required.

8.3 If the access panels are to be removed for any reason the electrical supply to the

unit must be isolated.

8.4 A minimum period of two minutes should be allowed after electrical disconnection

before access panels are removed. This will allow the impeller to come to rest.

NB: Care should still be taken however since airflow generated at some other point in the system can cause the impeller to windmill even when power is not present.

8.5 Care should be taken when removing and storing access panels in windy

conditions.

INFORMATION FOR SAFE INSTALLATION, OPERATION AND MAINTENANCE OF NUAIRE VENTILATION EQUIPMENT

DECLARATION OF INCORPORATION AND INFORMATIONFOR SAFE INSTALLATION, OPERATION AND MAINTENANCE

DECLARATION OF CONFORMITY

We declare that the machinery named below is intended to be assembledwith other components to constitute a system of machinery. All parts except for moving parts requiring the correct installation of safety guardscomply with the essential requirements of the Machinery Directive. The machinery shall not be put into service until the system has been declared to be in conformity with the provisions of the EC Machinery Directive.

Designation of machinery: MRXBOX95B-WM2H


Relevant EC Council Directives: 2006/42/EC (Machinery Directive)

Applied Harmonised Standards: BS EN ISO 12100-1, BS EN ISO 12100-2, EN60204-1, BS EN ISO 9001, BS EN ISO 13857

Applied National Standards: BS848 Parts 1, 2.2 and 5





We declare that the machine named below conforms to the requirements ofEC Council Directives relating to Electromagnetic Compatibility and Safetyof Electrical Equipment.

Designation of machinery: MRXBOX95B-WM2H

I & M Serial No.: 671600


Relevant EC Council Directives: 2004/108/EC (EMC), 2006/95/EC (Low Voltage Directive)

Applied Harmonised Standards: EN55014-1, EN55014-2, EN61000-3-2, EN61000-3-3, EN60335-2-80

Basis of Self Attestation: Quality Assurance to BS EN ISO 9001BSI Registered Firm Certificate No. FM 149




Nuaire Ltd,Western Industrial Estate,Caerphilly CF83 1NA.


Standard Assessment Procedure 2005 Appendix Q MVHR Installation Guide

Installation Guide and Checklist

Mechanical Ventilation with Heat Recovery

(Version 11 February 2011)

The Electric Heating and Ventilation Association have developed this guidance and

checklist document in partnership with the Residential Ventilation Association (a HEVAC association), BRE and EST.

NOTE: This guide and checklist has been superseded for dwellings assessed under

The Building Regulations 2010, specifically SAP 2009 and Approved Documents L and F. Completion of this document is therefore only required for dwellings assessed by

SAP 2005.

Customer Details Customer Name: Address: Telephone Number: Date of Installation: Name of Lead Contractor: Design Project Number:

It should be noted that this guidance is not intended to replace product manufacturer installation instructions; it is a generic addition which defines good

practice. Installers are advised to complete this form for each installation and keep a copy to provide to Building Control Officers in case requested.


Introduction This document is to be used in support of the SAP Appendix Q scheme which provides tested performance values for MVHR products. Note that all checklist items must be answered YES in order for the SAP Appendix Q test figures to be used in As built SAP calculations. If any checklist items are answered NO then SAP default figures must be used. Systems must be designed by a manufacturer designer and sized correctly to qualify for SAP Appendix Q figures. SECTION 1: INSTALLATION GUIDANCE

1. Ductwork Installation Decision Yes, No or

N/A Have the ducts been installed with as little air resistance and leakages as possible (flexible ducts should be avoided)? Note: Refer to HVCA DW/143 document A Practical Guide to Ductwork Leakage Testing for detailed guidance on air tightness. Rigid plastic ducting is recommended and flexible duct should only be used in very short lengths and mainly just to connect the ductwork to the units/diffusers or to overcome particular obstructions.

If flexible ducting has been used, has it been pulled taut to minimise system resistance?

Has the number of duct bends been minimised to ensure adequate air flow and least resistance? Bends should have a minimum radius at least the same as the diameter of the ducting used? Refer to Figure 1 if using flexible ducting

Have the fans and ducting placed in unheated voids been insulated to reduce the possibility of condensation forming (see notes below)? Note: Ducts should be insulated with the equivalent of at least 25mm of insulating material with a thermal conductivity of 0.04W/mK. Where a duct rises vertically it may be necessary to fit a condensation trap in order to prevent backflow of any moisture in the product. Insulation should be applied to both warm and cold air ducts. Cold air ducts should be wrapped additionally with a vapour barrier outside the insulation. Ducts with cold air running in warm environments will condense on the outside of the duct.

Have recommended duct jointing collars and components been used to ensure appropriate duct performance (duct runs should be as air tight as possible)? Note: All the joints should be sealed correctly either using duct tape or silicon.


Figure 1 Ductwork Visual Guide

Source: Approved Document F (England & Wales) 2006

2. Unit Fixing Decision Yes, No or

N/A Has the heat recovery unit been effectively insulated? Note: If the unit is not pre-insulated then ensure additional insulation is installed around the unit to minimise heat loss

Has the heat recovery unit been fixed to a stable element of the building fabric (e.g. wall or floor) using manufacturer recommended/supplied fixing brackets?

Has the condensation drain been fitted and the pipe insulated?

Have approved acoustic/anti-vibration mountings been used? Note: Special attention is needed to avoid transmission and stress to duct joints

Has the unit been installed in a position that will permit access for maintenance purposes?

Have all grilles or ductwork that penetrate the buildings air barrier, as identified in the construction drawings, been sealed to ensure continuity of the air barrier?


Figure 2 Sample Mounting Positions

3. Electrical Connection Decision Yes, No or

N/A Has the rating label been verified to establish suitability for the installation strategy and whether an earth is required (e.g. voltage, class I or II product status)?

Has a local isolator been provided to enable the unit to be isolated for maintenance purposes?

Has the unit been fused in accordance with its power rating?

SECTION 2: COMMISSIONING GUIDANCE


1. System Balancing & Calibration Decision

Yes, No or N/A

Has the air flow been checked using a proprietary device such as an anemometer (recommended)?

Have the controls been set following a defined process? Refer to figure 3 flow diagram

Have all distribution grilles been locked where possible to minimise unapproved occupant adjustment?

Figure 3

Ensure all external and internal windows and doors are closed

Set fan speed using manufacturer data table

Set normal daytime air flow on extract points starting at location furthest from

unit

Set normal daytime air flow on input points starting at location furthest from

unit

Step 1

Step 2

Step 3

Step 4

Step 5 Set fan speed to boost and measure extract rates at each location, adjust

fan speed setting as required to achieve required flow


2. Handover and Control/Maintenance Advice Decision Yes, No or

N/A Has the customer been supplied with suitable documentation detailing maintenance and operational requirements?

Has the customer been advised that opening windows is not recommended during normal use in order to ensure the energy efficient operation and performance of the balanced system?

Has the customer been advised not to seal natural air flows from room to room (e.g. avoid door seals and thick pile carpets)

Has the customer been advised not to alter settings post-commissioning?

Has the customer been advised to clean the filters as explained in the manufacturers instructions?

Unit: MRXBOX95B-WM2H - Location: MVHR01Technical DataSpecification

Unit: MRXBOX95B-WH1H - Location: MVHR02Technical DataSpecification

Supporting DocumentsMRXBOX95B-WH1H Mechanical Ventilation Unit with Heat Recovery, Summer Bypass and Integral Humidistat Installation and Maintenance (21. 06. 13. Leaflet Number 671599)MRXBOX95B-WM2H Mechanical Ventilation Unit with Heat Recovery, Summer Bypass and Integral Humidistat Installation and Maintenance (21. 06. 13 Leaflet Number 671600)

Fan Data Sheets_Kings Cross T1 Building

Documents

Transcript of Fan Data Sheets_Kings Cross T1 Building